ios - Why does mmap() use MAP_FAILED instead of NULL?

ios - Why does mmap() use MAP_FAILED instead of NULL?

Does anybody know why mmap() returns MAP_FAILED instead of NULL? It seems that MAP_FAILED is(void*)-1 on most systems. Why doesn't mmap() just use NULL instead? I know that address 0x0 is technically…


Unexpected exec permission from mmap when assembly files included in the project

I am banging my head into the wall with this. In my project, when I'm allocating memory with mmap the mapping(/proc/self/maps)shows that it is an readable and executable region despite I requested onl…


Bus error opening and mmap'ing a file

I want to create a file and map it into memory. I think that my code will work but when I run it I'm getting a "bus error". I searched google but I'm not sure how to fix the problem. Here is my co…





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